Home / 12,887.35-19,331.02-4,122.95

Finding the Fourth Proportional to 12,887.35, 19,331.02 and 4,122.95

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Solution

The fourth proportional to 12,887.35, 19,331.02 and 4,122.95 is: 6,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.35 : 19,331.02 = 4,122.95 : x
  2. Step 2: Convert to fraction form
    12,887.35/19,331.02 = 4,122.95/x
  3. Step 3: Cross multiply
    12,887.35x = 19,331.02 × 4,122.95
  4. Step 4: Simplify right side
    12,887.35x = 79,700,721.95
  5. Step 5: Solve for x
    x = 79,700,721.95/12,887.35
  6. Step 6: Final answer
    x = 6,184.42

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.